28 bases. Every split california king adjustable base we list, with what it does and what it costs.
Quick answer: A split california king is two bases side by side that move independently: two 36 × 84″ halves make a California king. You’ll need two mattresses or one made to split.
1
Best for: Wall-hugging base with lumbar
Wall Saver chassis, auto head tilt, lumbar, massage, anti-snore and app control on top of head-and-foot lift.
Good to know: Heads-up: like every Ergomotion base it's final sale.
2
Best for: Wall-hugging base with lumbar
Leggett & Platt's top base: Wallhugger, pillow tilt, lumbar, wave massage, app and USB-A/C on each side.
Good to know: Heads-up: sold only through retailers in Twin XL, Queen and Split Cal King, so price, returns and warranty depend on the store.
3
Best for: Wall-hugging base with lumbar
Wall-hugger lift with pillow tilt, a 4″ lumbar bar, dual massage, app control, USB-A/C and lights.
Good to know: Heads-up: returns cost a 20% restocking fee plus your shipping, and the head angle is listed as both 75° and 65°.
4
Best for: Full-featured hidden-hardware base
Adds massage, lumbar, automatic head tilt, app control and under-bed light to the standard Avocado base.
Good to know: Split Cal King showed unavailable, and bases are non-refundable.
5
Best for: Automatic snore response
Senses snoring and raises the head, with 2-zone massage, lumbar support and sleep tracking.
Good to know: Needs Wi-Fi and the app for the smart features, and it can't be returned.
6
Best for: Tempur’s top base, sound massage
Tempur-Pedic's top base: snore response, WaveForm sound massage, SoundScape audio and a wind-down routine.
Good to know: No Full size, and like every Tempur base it can't be returned.
7
Best for: Upholstered furniture-look base
RIO 5.0 features (lumbar, head tilt, Wall Saver, massage, USB) in an upholstered base with headboard brackets included.
Good to know: Heavy (Queen listed at 343 lbs), no Full size, and it's final sale.
8
Best for: Split-top and massage options Tested by experts
Adds massage, zero-gravity and anti-snore presets, memory, under-bed lights and USB-A/C ports, in sizes up to Split Cal King and Upper-Flex.
Good to know: Final sale, and the Upper-Flex versions only work with Saatva's Upper-Flex mattresses.
9
Best for: Pillow tilt, sound and anti-snore
Serta's top base: pillow tilt, dual massage, anti-snore preset, white/pink/brown noise and three light settings.
Good to know: Not wall-hugging, and return terms for bases aren't spelled out.
10
Best for: Massage, USB and lights for less
Head and foot lift, dual massage, Zero-G and anti-snore presets, app control, USB-A/C and under-bed lights.
Good to know: No pillow tilt or lumbar, and returns cost a 20% restocking fee plus shipping.
11
Best for: Lumbar lift, massage, USB, lights
Adds adjustable lumbar support, 1-zone massage, USB-C charging and underbed lights to head-and-foot lift.
Good to know: Can't be returned, and no Twin size.
12
Best for: Budget massage base, mostly sold out Tested by experts
Head and foot lift, six massage settings, zero-gravity and anti-snore, with 4″, 8″ or 12″ leg clearance.
Good to know: Only the Split Cal King showed in stock, and it can't sit on a box spring.
13
Best for: Sleep Number’s entry smart base
Sleep Number's entry smart base, listed with app control, underbed lighting and Partner Snore.
Good to know: Bases can't be returned, and the page is unclear on foot lift.
14
Best for: Smart head-and-foot base
Head and foot lift, Zero Gravity, automatic underbed lights, app control and Partner Snore.
Good to know: Partner Snore needs a Split King or FlexTop King, and bases can't be returned.
15
Best for: Foot warming smart base Tested by experts
Everything in FlexFit 2 plus foot warming on either side.
Good to know: No Twin XL, and bases can't be returned.
16
Best for: Massage base with split cal king Tested by experts
Adds massage, TV and zero-gravity presets, two memory slots, two USB ports and under-bed lighting.
Good to know: Bases are final sale.
17
Best for: Massage, USB and lights
Adds two-motor massage, three programmable presets, USB-A/C ports and under-bed lights to head-and-foot lift.
Good to know: No lumbar or head tilt, and it's final sale.
18
Best for: Massage base with split-head option
Head and foot lift, single massage, three memory presets, USB-A/C and under-bed lighting; Split Head versions let each side raise its own head.
Good to know: No anti-snore or lumbar, and return terms for bases aren't spelled out.
19
Best for: Head and foot with massage
Head (up to 60°) and foot (up to 35°) lift with zero-gravity preset, massage, under-bed lights and USB ports.
Good to know: Return terms and capacity aren't stated on the page.
20
Best for: Low-profile, fabric-wrapped base
Head and foot lift, zero-gravity and anti-snore presets and two memory buttons, with a split cal king option.
Good to know: No massage, and the base is non-refundable.
21
Best for: Basic head-and-foot base
Head and foot lift (60° and 40°) with a zero-gravity preset and saved positions by wireless remote.
Good to know: No massage or lights, and it's nonrefundable.
22
Best for: Budget split cal king base Tested by experts
Head and foot lift with a zero-gravity preset, 750 lb stated capacity, and Split Cal King sizing.
Good to know: No massage, no returns, and the 10-year coverage excludes motors and electronics.
23
Best for: Basic head-and-foot base
Head and foot lift with one-touch Zero-G and Flat on a six-button wireless remote, plus 12″ stackable legs.
Good to know: No massage, USB or lighting, and it's final sale.
24
Best for: Simple base, tall leg range Tested by experts
Head and foot lift with a Zero-Gravity preset and tool-free legs from 4″ to 16″ total height.
Good to know: No massage, USB or lighting, and it can't be returned.
25
Best for: Basic head-and-foot base
Head and foot lift with Zero-G and Flat presets on a wireless remote, plus 3-in-1 legs.
Good to know: No massage, USB or lights; Twin is sold but has no size-guide inches.
26
Best for: Basic head-and-foot lift
Tempur-Pedic's entry power base: head and foot lifts, a Zero-G preset and a wireless remote.
Good to know: No massage, USB ports, lighting or lumbar, and it can't be returned.
27
Best for: Head-only lift, wired remote
Entry base that raises the head only, with a two-button wired remote, 9″ legs and a zero-clearance build.
Good to know: No foot lift, and Ergomotion bases are final sale.
28
Best for: Head-only base, wired remote
Serta's entry base raises the head only, on a wired remote, with 9″ legs that come off for zero clearance.
Good to know: No foot lift, and the return terms for bases aren't spelled out.
| Detail | ErgomotionRIO 5.0 Adjustable Bed | Leggett & PlattProdigy LBR 2.0 | Sven & SonPlatinum Series Adjustable Bed Frame | AvocadoAvocado Plus Adjustable Base | Tempur-PedicTEMPUR-Ergo Smart Base | Tempur-PedicTEMPUR-Ergo ProSmart Base | ErgomotionRIO 6.0 Adjustable Bed | SaatvaSaatva Adjustable Base Plus | Sertabaselogic Platinum Adjustable Base | Sven & SonClassic Series Adjustable Bed Frame | Tempur-PedicTEMPUR-Ergo Power Base | AvocadoEco Adjustable Base |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Head / foot | Head + foot | Head + foot | Head + foot | Head + foot | Head + foot | Head + foot | Head + foot | Head + foot | Head + foot | Head + foot | Head + foot | Head + foot |
| Zero gravity | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Massage | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Wall-hugging | Yes | Yes | Yes | — | — | — | Yes | — | Yes | — | — | — |
| App | Yes | Yes | Yes | Yes | Yes | Yes | — | Yes | — | Yes | — | Yes |
| Under-bed light | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | — |
| Split sizes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Stated capacity | 750 lb | 850 lb | 750 lb | 850 lb | 650 lb | 650 lb | 750 lb | 850 lb | 750 lb | 750 lb | 650 lb | — |
| Queen price | $1,599 | — | $1,396 | $2,499 | $2,199 | $2,699 | $1,799 | $1,360 | $1,799 | $700 | $1,699 | — |
| Warranty | 10-year limited (manual: 2 years full on electronics, parts years 3–5, prorated mechanical parts years 6–10) | Varies by model; Leggett & Platt says to ask the retailer for warranty details | 25-year limited, prorated (years 1–2 full parts, labor and shipping; 3–5 75% parts; 6–10 50%; 11–25 25%) | 20-year limited via Nisco: 2 years full, 15 years prorated electronics, 20 years prorated steel frame | 25-Year Limited Warranty (return policy page: 3-year full parts and labor, 25-year limited on the frame) | 25-Year Limited Warranty (return policy page: 3-year full parts and labor, 25-year limited on the frame) | 10-year limited (manual: 2 years full on electronics, parts years 3–5, prorated mechanical parts years 6–10) | 25-year limited, full coverage for the first 5 years | 20-year limited (manufacturing and workmanship defects) | 25-year limited, prorated (years 1–2 full parts, labor and shipping; 3–5 75% parts; 6–10 50%; 11–25 25%) | 25-Year Limited Warranty (return policy page: 3-year full parts and labor, 25-year limited on the frame) | — |
Features, prices and capacities are from each seller’s site on the date shown on its page. We may earn a commission if you buy.
Two twin XL bases side by side (each 38 × 80″) that together make a king. Each side moves on its own, so partners can choose different positions.
You need one that can bend. Most foam, latex and many hybrid mattresses work; check that the mattress maker says it’s adjustable-base compatible. Traditional innerspring mattresses with a rigid border usually don’t.
Sometimes. The base needs an open space at least as big as its outside size, and its legs or the frame must hold it at the right height. Some bases are made to sit inside a frame.
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